Today we released version 1.0.1 of our cross platform spell checker for Xojo. This Xojo plugin works on Mac and Windows and will use the system spell checker where available (all Mac OS X and Window 8+). Otherwise, it will fall back to the popular Hunspell spell checking dictionary. On systems that can use both you have the option of either the system or Hunspell dictionary.
The BKS Spell Checker plugin is designed for use with the Formatted Text Control but also works with the native Xojo TextField and TextArea controls.
This version fixes an issue in Windows XP.
More information, demo, and pricing at http://www.bkeeney.com/allproducts/bks-spell-checker-plugin-for-xojo/